JFFS2 as transactional FS (in other words: how to be sure that data have been writtent correctly from userspace)
jwboyer at linux.vnet.ibm.com
Thu Mar 8 08:44:32 EST 2007
On Thu, 2007-03-08 at 13:22 +0000, David Woodhouse wrote:
> On Thu, 2007-03-08 at 14:12 +0100, Jörn Engel wrote:
> > Then you have your bug report. Ignoring those was ok in 2001, but with
> > wbuf I would at least expect JFFS2 to return an error.
> Not quite, because that's not what he was trying. He said he was using
> I would hope that JFFS2 doesn't _have_ to return an error -- the VFS
> should do so if the filesystem doesn't support a given option. That
> doesn't seem to be the case though, so I agree that we should make JFFS2
> check for those two flags and refuse the operation (mount/open) for
> write-buffered flash.
Wait... why? Rejecting mount -o sync seems sane, but why can't O_SYNC
support be handled? If users want to open their files like that and it
causes JFFS2 to flush a bunch of padding out, well they asked for it.
More information about the linux-mtd